How do impressions and clicks for Relevant Keywords affect the CTR of the original keywords and CPC?

Home Yandex Direct Certification How do impressions and clicks for Relevant Keywords affect the CTR of the original keywords and CPC?

They are used in CTR calculations just like impressions and clicks for the original keyword, but do not affect CPC.
They are not used in CTR or CPC calculations for the original keyword.
They are not included in CTR calculations, but affect CPC just like clicks and impressions for the original keywords.